A report released today from the National Research Council reiterates the pressing need for substantial action to limit the magnitude of climate change and to prepare to adapt to its impacts. Read about the America’s Climate Choices series below.
America’s Climate Choices, which builds on the four previous America’s Climate Choices panel reports, reaffirms that the preponderance of scientific evidence points to human activities as the most likely cause for most of the global warming that has occurred during the last several decades. Furthermore, the risk of dangerous climate change impacts is growing with every ton of greenhouse gases emitted into the atmosphere.
America’s Climate Choices makes the case for implementing strong federal policies that establish coherent national goals and incentives, and that promote strong U.S. engagement in international-level response efforts.
|America’s Climate Choices Panel Reports:|
|Understanding Earth’s Deep Past: Lessons for Our Climate Future
There is little dispute within the scientific community that humans are changing Earth’s climate on a decadal to century time-scale. By the end of this century, without a reduction in emissions, atmospheric CO2 is projected to increase to levels that Earth…
|Climate Stabilization Targets: Emissions, Concentrations, and Impacts Over Decades to Millennia
Emissions of carbon dioxide from the burning of fossil fuels have ushered in a new epoch where human activities will largely determine the evolution of Earth’s climate. Because carbon dioxide in the atmosphere is long lived, it can effectively lock Earth…
|Ocean Acidification: A National Strategy to Meet the Challenges of a Changing Ocean
The ocean has absorbed a significant portion of all human-made carbon dioxide emissions. This benefits human society by moderating the rate of climate change, but also causes unprecedented changes to ocean chemistry. Carbon dioxide taken up by the ocean…
|Verifying Greenhouse Gas Emissions: Methods to Support International Climate Agreements
The world’s nations are moving toward agreements that will bind us together in an effort to limit future greenhouse gas emissions. With such agreements will come the need for all nations to make accurate estimates of greenhouse gas emissions and to monitor…
|Monitoring Climate Change Impacts: Metrics at the Intersection of the Human and Earth Systems
The stresses associated with climate change are expected to be felt keenly as human population grows to a projected 9 billion by the middle of this century, increasing the demand for resources and supporting infrastructure. Therefore, information to assess…
|Surface Temperature Reconstructions for the Last 2,000 Years
In response to a request from Congress, Surface Temperature Reconstructions for the Last 2,000 Years assesses the state of scientific efforts to reconstruct surface temperature records for Earth during approximately the last 2,000 years and the…
|Assessment of Intraseasonal to Interannual Climate Prediction and Predictability
More accurate forecasts of climate conditions over time periods of weeks to a few years could help people plan agricultural activities, mitigate drought, and manage energy resources, among other activities; however, current forecast systems have limited…
|Understanding Climate’s Influence on Human Evolution
The hominin fossil record documents a history of critical evolutionary events that have ultimately shaped and defined what it means to be human, including the origins of bipedalism; the emergence of our genus Homo; the first use of stone tools; increases in…
|Global Climate Change and Extreme Weather Events: Understanding the Contributions to Infectious Disease Emergence: Workshop Summary
Long before the “germ theory” of disease was described, late in the nineteenth century, humans knew that climatic conditions influence the appearance and spread of epidemic diseases. Ancient notions about the effects of weather and climate on disease remain…
|Evaluating Progress of the U.S. Climate Change Science Program: Methods and Preliminary Results
The U.S. Climate Change Science Program (CCSP) coordinates the efforts of 13 federal agencies to understand why climate is changing, to improve predictions about how it will change in the future, and to use that information to assess impacts on human systems…